Yes. I donated a bunch of the green garden stakes with fluorescent orange tape used during my glacier travel days to PVSART, with primarily the Falling Water Trail’s exit in mind.
Aye, Dr. As for Hillwalker's post on this thread, he notes that "improvements" that contribute greatly to hiker safety
( blazing, rescue gear, shelters, bridges) are often removed by the US Forest Service, especially in designated Wilderness areas. For their rationale, please see their Recreational Opportunity Spectrums.
The last three I listed are often removed even from non-Wilderness areas. This act is often justified on grounds of saving money spent fixing or repairing existing infrastructure, although there are federal Recreational Trails Program grants available, and the USFS has people with the skills to properly administer and justify those grants by conditions of the program.
There are also modern funding mechanisms by Internet; a non-profit could collect gifts to be spent on particular projects, there's your oversight and financial responsibility.
In the early 2000s the USFS had a "Fee Pilot" program: part of parking fees collected on WMNF had to be spent on trail improvements on WMNF. They put out an annual report with color photos and color pie charts to show how they spent it. As one ranger told me in 2014, it's about accountability more than efficiency. Hey, at least we could debate "what" and "where" rather be stuck on "whether."
According to my AMC map # 2 Franconia - Pemigewasset (2007), Franconia Ridge Trail and Falling Waters Trail are not even IN a Wilderness Area, yet this spot lacks blazing, blaze poles, cairns etc. and hikers get off trail in winter conditions and sometimes die there.
There are other places along that ridge similarly risky.
I'll stop here. Blaze poles are cheap enough, and the skill to build and maintain them are common enough among the hiking community...